PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-21:42:50
G08     321.3          10.5              -14.0 +/-   30.75     -38.6 +/-   30.75  0.080 / 0.100
G10     301.7          53.3                7.5 +/-    1.14       9.1 +/-    1.14  0.060 / 0.100
G14     211.0          13.6               14.3 +/-    3.33      36.7 +/-    3.33  0.030 / 0.040
G15     46.4           30.5                7.6 +/-    0.40      13.2 +/-    0.40  0.040 / 0.040
G20     358.9          65.2                9.6 +/-    0.92      10.4 +/-    0.92  0.110 / 0.500
G21     104.5          72.3                9.4 +/-    0.73       9.9 +/-    0.73  0.140 / 0.620
G24     91.7           27.1               10.6 +/-    0.81      19.8 +/-    0.81  0.120 / 0.270
G27     298.6          34.6                8.7 +/-    1.76      13.8 +/-    1.76  0.130 / 0.430
G32     211.5          35.7               13.0 +/-    1.11      20.3 +/-    1.11  0.200 / 0.230